关键词: 深部巷道, 构造区域, 地应力, 巷道稳定性

Abstract: In this paper, aimed at controlling the stability of roadway surrounding rock in deep tectonic stress field, relationship between ground stress distribution and roadway stability was studied. Through ground stress measurement and inversion, the deep ground stress field in Juye Mining Area belongs to tectonic stress field. Meanwhile, based on the ground stress distribution characteristics, by using similar simulation, numerical simulation and field test, the effects of buried depth, tectonic stress, roadway layout, fault, etc, on roadway stability were systematically studied. The results show that when buried depth is over 800 m, and lateral pressure coefficient is over 2.5, roadway deformation increases rapidly, plenty of shoulder bolts are broken, the shear failures in roof and floor are serious, and the thick top coal appears "fastigium" shape collapse. Meanwhile, ground stress is higher near fault structures, and the larger the angle between roadway and the maximum horizontal stress is, the larger roadway deformation is, and the more serious the damage of support structure is. Thus, the surrounding rock control in roadway roof and shoulder needs strengthening in deep tectonic regions.

Key words: deep roadway, tectonic region, ground stress, roadway stability